CN2298512Y

CN2298512Y - Automatic continuous sampler for carbon monoxide sample

Info

Publication number: CN2298512Y
Application number: CN 97219449
Authority: CN
Inventors: 赵武昌; 赵景昌
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-06-28
Filing date: 1997-06-28
Publication date: 1998-11-25
Anticipated expiration: 2007-06-28

Abstract

The utility model relates to an atmosphere (containing CO) sampler. After the sampler is switched on a power supply whose voltage is 220V, each function key on the front panel of a shell body is respectively set according to need. A mass flow controller in the shell controls the flow and generates an electric signal, the signal is inputted to a chip microprocessor so that the chip microprocessor is worked to control a negative pressure pump and a six-way valve. An air conveying pipe sucks the atmosphere from the mass flow controller, the negative pressure pump orderly works by means of the atmosphere through a six-way valve to complete the inflation to an air bag A, the air conveyance from the air bag A to an air bag B, and the exhaustion of the residual air of the air bag A, and thus, automatic continuous sampling is completed by rolling periodic duty. The sampling process has the advantages of easy operation and labor saving without people's watch, and conforms to the specification of national standards, and the sampler which is favorable for environmental monitoring is applicable to collecting carbon monoxide samples in the atmosphere.

Description

The automatic continuous sampling device of carbon monoxide

The utility model relates to a kind of air sampler, particularly gathers the sampling thief that closes CO gas.

The present carbon monoxide sampling thief of using is to adopt the duplex ball device directly in will the manual suction ball of the surrounding air that contain carbon monoxide gas of survey place.Use this sampling thief can only instantaneous collection will detection place air, do not meet that the sampling about the carbon monoxide atmosphere pollution will guarantee among the standard GB3095-1996 of new nation (replacing GB3095-1982): the per day sampling time that has 18 hours at least; 1 hourly average has the regulation in 45 minutes sampling time at least.Reluctantly application also can only intermittent sampling, both requires great effort, and it is inaccurate again to detect data.

The purpose of this utility model provides the automatic continuous sampling device of a kind of carbon monoxide, and the sampling that its method of sampling, sampling time are met among the standard GB 3095-1996 is stipulated.The sample data of being adopted are accurate, and sampling process is simple, laborsaving.

The purpose of this utility model is achieved in that sampling thief mainly is made up of each functor in housing and the shell.The front face of housing is provided with digital display screen, pilot lamp, function key and sampling gate.Functor in the shell has mass flow controller, chip microprocessor and negative pressure pump, six-way valve and the air bag A that links to each other by gas piping with it, air bag B under its control.Sampling thief is connected the 220v power supply, presses power switch, and the screen flicker on the front face illustrates the internal electric source connection.Set each function key on the front face as required respectively, the air-flow that mass flow controller in the shell receives has been fixed flow and has been produced electric signal input chip microprocessor through its internal work, chip microprocessor is according to function key on the plate face, select the time, branch, thereby continuously and the next day state control negative pressure pump and six-way valve, under the sequential working that opening of valves is closed, negative pressure pump is finished in air bag A and is inflated, from air bag A gas transmission and overall process that air bag A residual gas is discharged in air bag B.The working cycle of so going round and beginning again, can finish continuously automatically per dayly be no less than 18 hour sampling time, 1 hourly average is no less than the sampling in 45 minute sampling time, and sampling can carry out automatically the next day.After having adopted, open sampling gate, take out air bag B access infrared ray gas analyzer and carry out the carbon monoxide in atmosphere content detection.

The utility model just adopts several Control part and two air bags, just can finish sampling, and it is simple in structure; Can gather the sample that meets national standard automatically continuously by the function key setting of front face and the interaction of control piece, and not need the people on duty easy and simple to handle, laborsaving.Particularly suitable is gathered the carbon monoxide in atmosphere sample, helps environmental monitoring.

Below in conjunction with accompanying drawing concrete structure of the present utility model and working condition are elaborated.

Fig. 1 is an outside drawing of the present utility model.

Fig. 2 is a fundamental diagram of the present utility model.

Among Fig. 1, the shell of sampling thief is a case structure, the front panel of housing is provided with pilot lamp 1, display screen 2, power switch 3, increases progressively/temperature key 4, displacement/flow key 5, the time, branch key 6, decide key point 7, key 9 key 8 next day when adopting, key 10 and sampling gate 11 continuously.

Increase progressively/temperature key 4 is double function keies, when sampling thief was in adjustment state, incremental functionality can be used with the shift function of displacement/flow key 5, finish each parameter value presetting on display screen 2, when sampling thief is in sample states, press the temperature function key, can inquire about scene temperature (K).

Displacement/flow key 5 also is a double function key, the actual flow (L/min) in the time of can inquiring about sampling by the traffic engineering capability key.

When pressing, divide key 6 can finish the sampling of 1 hourly average value.

Press and decide key point 7, when sampling thief is in adjustment state, can be provided with and Displaying timer on time, then Auto Power On.

The function of key 8 is the accumulated samples time that shows air bag B when adopting.

The next day key 9 function be can set 24 hours post-sampling devices to begin to enter the continuous sampling state, carry out work.

The function of key 10 is to make the sampling thief continuous working finish the daily mean sampling in 24 hours continuously.

In Fig. 2, gas circuit is that mass flow controller 12, negative pressure pump 14, six-way valve 15, air bag A16, air bag B17 join by gas piping successively.The electric signal of chip microprocessor 13 quality of reception flow controllers 12, thus motor and six-way valve 15 on the control negative pressure pump 14 make its work.

Connect the 220V power supply, press power switch 3 display screens 2 and show that the sampling thief energized enters application state.By displacement/flow key 5, increase progressively/temperature 4 respectively, make demonstration on the display screen 2 good Beijing time.Set out the on time by deciding key point 7.By continuous key 10, to the on time of setting, sampling thief begins automatic continuous working.Its course of work is: the air-flow that mass flow controller 12 receives has been fixed flow and air-flow generation electric signal through its internal work, and this electric signal is imported chip microprocessor 13 automatically and made its work.Chip microprocessor 13 is being controlled motor and the six-way valve 15 on the negative pressure pump 14, make negative pressure pump 14 work, six-way valve 15 rotations, the valve core of six-way valve 15 rotates to a certain angle and opens valve 1, valve 4 in the six-way valve 15, make the automatic geometric ratio of surrounding air that contains carbon monoxide inhale by negative pressure pump 14, being input to material is among the round air bag A16 of high-quality latex.Because the rotation of six-way valve 15 is closed valve 1, valve 4, stops air inlet among the air bag A16; Valve 2, valve 5 are opened, and the gas among the air bag A16 is transported among the round air bag B17 that material is the high-quality latex under negative pressure pump 14 effects.Along with the rotation of six-way valve 15, valve 2, valve 5 are also closed, and the combination gas among the air bag B17 is stored.Valve 3, valve 6 are opened, and under the effect of negative pressure pump 14, the emptying of air bag A16 residual gas are inflated to utilize next circulation.Under the control of chip microprocessor 13, the periodic duty that negative pressure negative pressure pump 14, six-way valve 15 are gone round and begun again, detect desired volume after making compressed mixed air among the air bag B17 reach sampling, reach daily mean among the GB GB3095-1996 greater than sampling time of 18 hours by time control.

Sampling for 1 hourly average value, when on time, dividing key 6 to select, divide the work state, the work that sampling thief is finished two cycles automatically just can reach that 1 hourly average value is no less than 45 minutes sampling time among the GB GB3095-1996, and has guaranteed to detect desired combination gas volume.

Make sampling thief work next day of wanting, do not need the people to be in the action, duty and cut-in time next day of setting, but sampling thief Auto Power On continuous working is then sampled.

After sampling is finished, open sampling gate, the inlet end of the little reverse checkvalve from the air bag B17 is pulled up gas piping, takes out air bag B17 and receives and carry out the carbon monoxide in atmosphere content detection on the infrared ray gas analyzer.

Claims

1, the automatic continuous sampling device of a kind of carbon monoxide, this sampling thief mainly is made up of each functor in housing and the shell; The front panel that it is characterized in that box-type shell is provided with pilot lamp (1), display screen (2), each function key and sampling gate (11); The gas piping of the functor mass rate control (12) in the housing communicates with negative pressure pump (14), and the gas piping of negative pressure pump (14) communicates with six-way valve (15), and six-way valve (15), air bag A (16), air bag B (17) connect by gas piping; The electric signal input chip microprocessor (13) that mass flow controller (12) produces makes its effect, controls negative pressure pump (14), six-way valve (15) sequential working is finished to A capsule (16), B capsule (17) inflation.

2, sampling thief according to claim 1 is characterized in that air bag A (16), air bag B (17) are ball-types.And air bag A (16) ballonet B (17) is big.

3, sampling thief according to claim 1 is characterized in that valve 1, valve 4 unlatchings of six-way valve (15), and to air bag A (16) inflation, valve 2, valve 5 are opened, and in the input air bag B of the gas among the air bag A (16) (17), valve 3, valve 6 are opened air bag A (16) emptyings.